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3 years ago

The radius of a circle is 2 inches. what is the circles diameter

2 answers:

andrey2020 [161]3 years ago

6 0

The diameter is a line that stretches across the middle of a circle from end to end. The radius is one half of this line, stretching from the center of the circle to a point on the side of the circle. This means that the diameter is 2 times the length of the radius. 2 times 2 is 4, meaning that the diameter is 4 inches.

valentinak56 [21]3 years ago

6 0

4 is the circle's diameter.

The radius of a circle is half of the half of a circle. So, imagine having a line cut through a circle (the diameter). Half of that line is called the radius. In mathematical format, the diameter over two, or divided by two, is the radius.

Diameter is the radius times 2, you can visualize it as a straight line cutting a circle in half.

Now, knowing this information, if the radius is two inches, all you have to do is 2*2, which is 4.

In conclusion, the answer would be 4 inches, or 48 centimeters if you want to get specific.

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Ax- bx > 2a-2b<br><br>solve for x

Dima020 [189]

Answer:

If a<b, x<2

If a>b, x>2

Step-by-step explanation:

ax-bx>2a-2b, (a-b)x>2(a-b)

If a>b, x>2(a-b)/(a-b)=2

If a<b, x<2(a-b)/(a-b)=2

3 0

2 years ago

Help me with number 2 please !

vovangra [49]

2.5... if you question was 5/2

7 0

3 years ago

Read 2 more answers

17. Consider the function f(x, y, z) = xy ln(yz).

Lelu [443]

We can expand

$f(x,y,z) = xy\ln(yz) = xy \ln(y) + xy\ln(z)$

Then using the product and chain rules,

$\dfrac{\partial f}{\partial x} = y\ln(y) + y\ln(z) + \boxed{y\ln(yz)}$

$\dfrac{\partial f}{\partial y} = x\ln(y) + \dfrac{xy}y + x\ln(z) = \boxed{x\ln(yz) + x}$

$\dfrac{\partial f}{\partial z} = \boxed{\dfrac{xy}z}$

3 0

2 years ago

7. A triangle has sides with lengths of 10 metres,

Kay [80]

Answer:

It is not a right triangle.

Step-by-step explanation:

We can prove this by Pythagorean theorem because it represents to a right triangle.

Pythagorean theorem:

a² + b² = c²

Now substitute the values.

Note: the longest side will represent c

So,

a = 10 m

b = 16 m

c = 20 m

10² + 16² = 20²

The objective here is to make them equal.

100 + 256 = 400

356 ≠ 400

They are not equal so it is not considered a right triangle.

7 0

3 years ago

In the year 2000, the United States had a population of about 281.4 million people; by 2010, the population had risen to about 3

IgorC [24]

Answer:

Part 1. 0.9259 % per year

Part 2. P = 281.4e^(0.009 259t); 338.6 million

Step-by-step explanation:

Data:

P₀ = 281.4 million

P = 308.7 million

Part 1. Growth rate

t = 2010 - 2000 = 10 yr

P = P₀e^(rt)

308.7 = 281.4e^(10r)

e^(10r) = 1.0970

10r = ln1.0970

r = (ln1.0970)/10 = (0.092 59)/10 = 0.009 259

r = 0.9259 % per year

The 10-year continuous growth rate is 0.9259 % per year.

Part 2. Population model

The population model is

P = 281.4e^(0.009 259t)

where P is in millions and t is the number of years since 2000.

By 2020,

P = 281.4e^(0.009 259 × 20) = 281.4e^0.1852 = 281.4 × 1.203

P = 338.6 million

The estimated population in 2020 is 338.6 million.

8 0

3 years ago